xfer51.patch
Patch file for send-file command of Xfer (Win32 binary)
Greg Cook, 16/Apr/2006
For Xfer 5.1
(http://www.g7jjf.com/)

Usage:	Either patch the binary manually from the listing, or
	enter the following Linux commands:
		cd xfer51
		mv -f XFER.EXE XFER.EXE.old
		xd -c XFER.EXE.old > XFER.EXE.hex
		patch -Np1 < xfer51.patch
		xd -l XFER.EXE.hex > XFER.EXE
	(xd can be found at http://www.fourmilab.ch/xd/ )

Result:	When performing command P (PC file CRC), opens the local
	file in binary mode.  This allows the calculated CRC to
	be correct when running in Windows.
	Also eliminates the pause every 256 bytes in command S
	(Send files to BBC), leaving only the pause every 4096
	bytes to allow the BBC to save the file to disc.

cksum xfer51.orig/XFER.EXE xfer51/XFER.EXE
205336601 90112 xfer51.orig/XFER.EXE
3081791249 90112 xfer51/XFER.EXE

md5sum -b xfer51.orig/XFER.EXE xfer51/XFER.EXE
4818fcfd25ab2d608807e9322c5618ba *xfer51.orig/XFER.EXE
854c5b4873f0feef7ee910897aa88665 *xfer51/XFER.EXE

diff -Naur xfer51.orig/XFER.EXE.hex xfer51/XFER.EXE.hex
--- xfer51.orig/XFER.EXE.hex	Sun Apr 16 22:12:42 2006
+++ xfer51/XFER.EXE.hex	Sun Apr 16 22:12:49 2006
@@ -1384,7 +1384,7 @@
   5670: 00 68 00 01 00 00 51 55  E8 83 BE FF FF 8B F0 83 | .h....QUè.¾ÿÿ.ð.
   5680: C4 28 83 FE 03 0F 85 9C  01 00 00 8B 44 24 14 33 | Ä(.þ........D$.3
   5690: FF 85 C0 8B D8 C7 44 24  1C 00 10 00 00 0F 8E EE | ÿ.À.ØÇD$.......î
-  56A0: 00 00 00 81 FB 00 01 00  00 BE 00 01 00 00 7F 02 | ....û....¾......
+  56A0: 00 00 00 81 FB 00 10 00  00 BE 00 10 00 00 7F 02 | ....û....¾......
   56B0: 8B F3 8B 44 24 30 85 C0  75 36 8B 54 24 24 8D 84 | .ó.D$0.Àu6.T$$..
   56C0: 24 3C 02 00 00 52 56 6A  01 50 E8 53 21 00 00 83 | $<...RVj.PèS!...
   56D0: C4 10 3B C6 74 1A 8D 4C  24 3C 51 68 A8 29 41 00 | Ä.;Æt..L$<Qh¨)A.
@@ -4390,7 +4390,7 @@
  11250: 54 72 61 6E 73 66 65 72  72 69 6E 67 20 66 69 6C | Transferring fil
  11260: 65 20 25 73 0A 00 00 00  43 61 6E 27 74 20 6F 70 | e %s....Can't op
  11270: 65 6E 20 42 61 73 69 63  20 70 72 6F 67 72 61 6D | en Basic program
- 11280: 20 25 73 00 72 00 00 00  B0 04 00 00 60 09 00 00 |  %s.r...°...`...
+ 11280: 20 25 73 00 72 62 00 00  B0 04 00 00 60 09 00 00 |  %s.rb..°...`...
  11290: C0 12 00 00 80 25 00 00  00 4B 00 00 58 46 65 72 | À....%...K..XFer
  112A0: 20 69 6E 20 43 20 76 65  72 73 69 6F 6E 20 25 2E |  in C version %.
  112B0: 32 66 0A 43 6F 70 79 72  69 67 68 74 20 4D 61 72 | 2f.Copyright Mar
diff -Naur xfer51.orig/src/xfer.c xfer51/src/xfer.c
--- xfer51.orig/src/xfer.c	Sat Jan 22 17:36:20 2005
+++ xfer51/src/xfer.c	Sun Apr 16 23:07:42 2006
@@ -664,7 +664,7 @@
   strncpy(filename, inffile, scan - inffile) ;
   filename[scan - inffile] = '\0' ;
 
-  if ( (file = fopen(filename, "r")) == NULL ) {
+  if ( (file = fopen(filename, "rb")) == NULL ) {
     printf("Problem opening %s, skipping\n", filename) ;
     return true ; /* don't abort because of this */
   }
@@ -1215,7 +1215,7 @@
        enough to write the buffer to disc. We also send the buffer in small
        chunks and allow the output to drain between writes. */
     while ( nbytes < length ) {
-      long wbytes = remaining > MAXLINELEN ? MAXLINELEN : remaining ;
+      long wbytes = remaining > SENDBUFSIZE ? SENDBUFSIZE : remaining ;
 
       if ( !fileerr &&
            (long)fread(buffer, sizeof(char), wbytes, fileh) != wbytes ) {

[End of xfer51.patch]